Extra stylish and practical, this combo of a zip neck sweater and jeans provides with variety. You could perhaps get a bit experimental when it comes to footwear and complete this outfit with black leather low top sneakers. As you can see here, it's very easy to look awesome and stay toasty come fall, thanks to this look. Gentlemen who are curious how to pull off modern casual dressing as you progress through your 20s, this ensemble should answer your question.